It basically shows that Marvel know the superhero genre will fade eventually, and they'll need to diversify.

Marvel's making Cinderella?? Where did you hear this?

And I don't think they should make original films honestly because they have so many characters that they could turn into films that could span so many different genres it's crazy. All of these characters could be superhero films but they could make them into different films all together. Make a Swamp Thing horror film, a Spider-Woman spy film, a Iron Fist martial arts film, etc.